Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test. Use flashcards and multiple-choice questions with hints and explanations. Ensure your success!

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What happens to amperage in a simple circuit if the voltage decreases slightly?

Increases slightly
Decreases slightly
Remains unchanged
Fluctuates wildly

The correct answer is: Decreases slightly

In a simple circuit, the relationship between voltage, current (amperage), and resistance is described by Ohm’s Law, which states that current is equal to voltage divided by resistance (I = V/R). If the voltage decreases slightly and the resistance remains constant, the current flowing through the circuit will also decrease slightly. This is because, with a lower voltage applied across the same resistance, the resulting current must decrease to maintain the relationship dictated by Ohm’s Law. Therefore, when the voltage is reduced, the overall energy being supplied to push the current through the circuit lessens, leading to a corresponding decrease in amperage. This fundamental principle underpins why a slight reduction in voltage leads to a slight decrease in amperage in a simple circuit.